The nozzle makes at first sight a stable impression. If, however, in "unfolded" brush absorbs stone or wooden floors and pressed a bit too hard on the vacuum cleaner tube, the brush is pushed inwards and disappears partially in the "apparatus". You will then hear a little scratching noises on the floor. So you should look often times, how far the brush still projects beyond the metal floor. She must be freed in relatively short intervals of dust which clings to her and does not disappear into the vacuum cleaner tube. So quite mature the technology is not here. Dear a more expensive nozzle, but has a locking of the brush. This has nothing to do with your foot to operate folding mechanism, but with the locking of the brush inside the nozzle.
